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Reitz, Richard, MD

Medical Director and Chair, Endocrinology
Quest Diagnostics Nichols Institute
San Juan Capistrano, CA

Expert Insight: Thyroid Cancer — The Role Of Molecular Testing

Publication: Correlation of Insulin-Like Growth Factor-I and -II Concentrations at Birth Measured by Mass Spectrometry and Growth from Birth to Two Months.

Publication: Discordance between mass spectrometry and immunometric IGF-1 assay in pituitary disease: a prospective study.

Publication: Total and free cortisol levels during 1 μg, 25 μg, and 250 μg cosyntropin stimulation tests compared to insulin tolerance test: results of a randomized, prospective, pilot study.

Publication: Mutational Analysis in Pediatric Thyroid Cancer and Correlations with Age, Ethnicity, and Clinical Presentation.

Publication: Temporal relationship between vitamin D status and parathyroid hormone in the United States.

Publication: Injectable dexamethasone sodium phosphate administered orally? A pharmacokinetic analysis of a common emergency department practice.

Publication: The Measurement of 3-Epimer 25-Hydroxyvitamin D by Mass Spectrometry in Clinical Specimens Detects Inconsequential Levels in Adult Subjects